Interface CodeAttribute
- All Superinterfaces:
Attribute<CodeAttribute>,AttributedElement,ClassFileElement,CodeModel,CompoundElement<CodeElement>,Iterable<CodeElement>,MethodElement
Models the
Code attribute (JVMS 4.7.3),
which contains the bytecode of this method.
This attribute only appears on methods, and does not permit multiple instances in a method. It has a data dependency on the constant pool.
This attribute was introduced in the Java Platform version 1.0.2, major version 45.
- API Note:
CodeAttributemodels properties of aCodeattribute read fromclassfiles. Generalclassfile transformation should process and traverse aCodeModelin the traversal of aMethodModel, to support transformation ofCodeattributes currently being built.- See Java Virtual Machine Specification:
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4.7.3 The
CodeAttribute - Since:
- 24
- See Also:
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Method Summary
Modifier and TypeMethodDescriptionbyte[]Returns the bytes (bytecode) of the code array.intReturns The length of the code array in bytes.intlabelToBci(Label label) Returns the position of thelabelin thecodeArray.intReturns the maximum size of the local variable table.intmaxStack()Returns the maximum size of the operand stack.Methods declared in interface java.lang.classfile.Attribute
attributeMapper, attributeNameMethods declared in interface java.lang.classfile.AttributedElement
attributes, findAttribute, findAttributesMethods declared in interface java.lang.classfile.CodeModel
exceptionHandlers, parentMethods declared in interface java.lang.classfile.CompoundElement
elementList, elementStream, forEach, iterator, toDebugStringMethods declared in interface java.lang.Iterable
spliterator
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Method Details
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maxLocals
int maxLocals()Returns the maximum size of the local variable table.- Returns:
- the maximum size of the local variable table
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maxStack
int maxStack()Returns the maximum size of the operand stack.- Returns:
- the maximum size of the operand stack
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codeLength
int codeLength()Returns The length of the code array in bytes.- Returns:
- The length of the code array in bytes
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codeArray
byte[] codeArray()Returns the bytes (bytecode) of the code array.- Returns:
- the bytes (bytecode) of the code array
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labelToBci
Returns the position of thelabelin thecodeArray. The label represents a cursor pointing at immediately before the returned index into thecodearray.- Parameters:
label- a marker for a position within thisCodeAttribute- Returns:
- the position of the
labelin thecodeArray - Throws:
IllegalArgumentException- if thelabelis not from this attribute
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